Heat gun



FIG. 1 is an isometric view of the heat gun, which embodies my design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof; and,

FIG. 6 is a right side view thereof.

The broken lines in the drawings illustrate features of the heat gun that form no part of the claimed design. 

CLAIM The ornamental design for a heat gun, as shown and described. 